Altronics A 4488 Manuel d'utilisation - Page 4

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Option 2 : Individual Zone Amplifiers using Line Level Signals
The audio from the paging console/s is fed down the Cat5e cable to the A 4489 audio switcher. Take the line level
(1V balanced signal) from the "Line Out" terminals on the rear of the A 4489 and feed them back into the "Audio In"
terminals on the rear of the A 4489 as shown in Fig 4.
The audio from the "Zone 1" to "Zone 4" terminals are then fed into individual amplifers to provide the audio for the
four zones. The audio from these output terminals are switched internaly by relays and are not present unless the zone is
activated by the paging console/s.
Use this method if using amplifiers with Line level balanced inputs. If the amplifiers used have mic level inputs use the
configuration outlined in option 1.
Typical connection of the A 4488/s and A 4489 with individual ampli ers for each zone using Line levels
24V DC POWER SUPPLY
SUCH AS M 9391A PLUGPACK
OR SIMILAR 24V 1 AMP SUPPLY.
POWER MUST BE CONNECTED
AT THE A 4489 LINE OUT BOX.
A 4488
4 Zone Communicator
Lock On
Page
All Call
Cancel
System Busy
Option 3 : One Zone Amplifier using Mic or Line Level Signals and individual speakers for each zone
The audio from the paging console/s is fed down the Cat5e cable to the A 4489 audio switcher. Take the line level
(1V balanced signal) from the "Line Out" terminals or the low level balanced signal from the "Mic Out" on the rear of the
A 4489 and feed them into the audio inputs of the zone amplifer as shown in Fig 5.
The speaker output of the zone amplifier is then fed into the "Audio In" terminals of the audio switcher.
The audio from the "Zone 1" to "Zone 4" terminals are then fed directly into the speakers to provide the audio for the
four zones. The audio from these output terminals are switched internaly by relays and are not present unless the zone is
activated by the paging console/s.
4
Redback® Proudly Made In Australia
To Paging Consoles
24V
DC IN
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CAT5 cable
Max 300M
A 4488
4 Zone Communicator
Lock On
Page
All Call
Cancel
System Busy
Line Out
Mic Out
Zone 4
Zone3
Zone2
Zone1
Audio In
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-
+
-
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-
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LINE LEVEL SIGNAL
Fig 4
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ZONE 1 AMPLIFIER
L
2
1
3
OUTPUT
R
Line
Mic
240V AC @ 50Hz
Fuse 800mA
ZONE 2 AMPLIFIER
L
2
1
3
OUTPUT
R
Line
Mic
240V AC @ 50Hz
Fuse 800mA
ZONE 3 AMPLIFIER
L
2
1
3
OUTPUT
R
Line
Mic
240V AC @ 50Hz
Fuse 800mA
ZONE 4 AMPLIFIER
L
2
1
3
OUTPUT
R
Line
Mic
240V AC @ 50Hz
Fuse 800mA
www.altronics.com.au
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